you can rerun just that step in recon-all, but you won't really be making it from 2005s, just recreating the 2009 parcellation from scratch (which is only a couple of minutes).

On Fri, 23 Dec 2011, LAOUCHEDI MAKHLOUF wrote:

hi eveyone                 i am quite new in freesurfer, is it possible to generate aparc.a2009s+aseg.mgz from aparc.a2005s+aseg.mgz without re running recon-all

thanks